A Design Category D vessel is considered to be designed for winds up to and including force 4 and significant wave heights up to and including 0.3 metres, with occasional waves up to and including 0.5 metres.

The ships

Corsaro II

Nationality: Italy | Year: 1960

Dar Szczecina

Nationality: Poland | Year: 1969

Hnlms Urania

Nationality: Netherlands | Year: 2004